Rossing attachment for sawmills.



un. 664,535. Patented nec. 25, |900. n.11. nlckmsnn.

ROSSUIG TTACHMENT FOR'SAWMILLS.

(Application filed Feb. 24. 1900.)

(No Model.) {Shafts-Sheet l.

W H Das sus No. 664,535. Patented Dec. 25, |900. B. H. DTCKINSUN.

ROSSING ATTACHMENT FOR SAWMILLS.

(Application mea Fb. 24, 19Go.) (No Model.) 5 Sheefs-Sheet 2.

TH: mams vargas co. woro.l |mn.. wAsNlNGYoN, u. c,

.l o m 5l 2 nm e D d e t n e t a P N. 0 s N K m D H. om Pa. 3 51 4 6 6 n N HUSSING ATTACHMENT FOR SAWMILLS.

(Application led Feb. 24, 1900.)

5 Sheets-$heet 3.

(No Model.)

muuu

No. 664,535. Patented Dec. 25, |900. H. H. DIBKINSUN.

ROSSING ATTACHMENT FOR SAWMILLS.

(Application 1ed Feb. 24, 1900.)

5 Sheets-Sheet 4,

(No Model.)

m. 664,535. Patnted nec. 25, |900.

n. H. nickmson. `RSSNG ATTACHMENT FR SWMILLS.

(Applicatin :Bled Feb. yB4, 1900.) (No Model.) 5 Sheets-Shee 5.

PATENT OFFICE.

' ROBERT H. DICKINSON, OF MOUNT HOPE, WEST VIRGINIA.

ROSSING ATTACHMENT FOR SAWMILLS.

SPECIFICATION forming part of Letters Patent No. 664,535, dated December 25, 1900.

` Application tiled February 24, 1900.` Serial No. 6,397. illo model.)

To all whom t may concern:

Be it known that l, ROBERT' H. DICKINSON, a citizen of the United States, residing at Mount Hope, in the county of Fayette and State of West Virginia, have invented a new and useful Rossing Attachment for Sawmills, of which the following is a specification.

My invention is an improved rossing attachment for sawmills.

One object of my invention is to eect improvements in the means for regulating the depth of the cut made by the rosser.

Another object of my invention is to effect improvements in the construction of the shield with which the rosser is provided.

Another object of my invention is to eifect improvements4 in the operating connections of the supporting-arm, the blower, and the rosser.

Another object of my invention is to effect improvements in the means for raising and lowering the rosser. l

To these and other ends my invention consists in the peculiar construction and combination of devices hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure l is a perspective view of a sawmill provided with a rossing `attachment embodying my improvements. Fig. 2 is a top plan view of the same. Fig. 3 is a side elevation of the same. Fig. 4 is a vertical transverse sectional view taken on the line moo of Fig. 2. Fig. 5 is a detail elevation of a rosser constructed in accordance with my invention adapted to employ worn and otherwise worthless insertible saw- `teeth for rossing purposes. Fig. 6 is a detail view of one of such saw-teeth. Fig. 7 is a detail view of a section of a sa w from which a tooth has been removed. Fig. 8 is a detail elevation of two cf my improved rossers,show- .ing the same so adjusted wi th relation to each other that the teeth of one operate in advance of the teeth of the other. Fig. 9 is a detail view of a modified form of rosser. Fig. 10 is a detail view of a modied form of rosser provided with two members of unequal diameters and adapted for cutting a kerf or groove which is deeper on one side than on the other, such fform of t-he rosser being especially adapted to the rotundity of a saw-log when used in connection with the saw for cutting off the slab `and making the first cuts of lumber from the log. Fig. 11 is a detail perspective view of my improved rossing attachment,showing the arm provided, with the fan or blower, the mandrel for the rosser, the shield or casing, and the adjusting devices for regulating the depth of the cut or kerf made by the rosser, the latter being removed from the mandrel and not shown. Fig. l2 is a detail elevation showing the outer end of the rosSer-supporting arm, the shield for the rosser, the rosser, and the means for adjusting the rosser with relation to the log. Fig. 13 is a detail perspective view of a portion of the rosser-supporting arm.

The sawmill with which my rossing attachment is to be used may be of any usual or preferred construction.

As here shown in the drawings, A represents the base-frame, having the bearings B for the mandrel C of the saw D, and on the said base-frame is placed and bolted a vertical stand E, having bearings F for a countershaft G., The saw-mandrel is provided in the usual manner with a pulley H fora powerbelt I, driven by a suitable engine, and said mandrel is further provided with a pulley K, which is loose thereon, and is connected to a pulley L on the counter-shaft G by a crossbelt M. A friction-cone N of usual construction, keyed on the saw-mandrel, is adapted to frictionally engage with the pulley K and make the latter fast to the saw-mandrel, so as to rotate therewith, and thereby communicate reverse rotation to the shaft G, and said cone forms a clutch and is operated by a crank-shaft O, having pedals P for the foot of the sawyer, whereby the shaft G may be thrown into and out of operation. On the vbase-frame A is bolted a bearing-standard l, and said bearing-standard is provided at its upper side with a segment-rack 2. A double sprocket-pulley 3, fast on a short shaft 4, has the latter disposed in a bearing with which the hearing-standard l is provided, the inner side of said double sprocket-pulleybearing against the segment-rack 2, and to the end of the shaft 4 which projectsbeyoud the opposite side of the standard l is keyedahandlever 5, which is provided with a springpressed detent 6, of usual form, to engage the segment-rack, and thereby lock said hand- IOO lever to the standard 1 at any required adjustment.

The carriage for the saw-log is indicated at R, and the track for said carriage is indicated at S.

On the counter-shaft G is loosely mounted the supporting-arm 7 of the rosser. The said supporting-arm is preferably made of a frame constructed of tubing 8 and comprising the parallel sides 9 10, connected together at the outer end of the arm by a cross-tube 11 and elbows 12 and connected together at va suit# able distance from the inner end of the supporting-arm by T-couplings 13 and a crosstube 14. The inner end of the side 10 of the rosser-supporting arm is oiset, as at 15, Whereby the arm is laterally braced, and to the inner ends of the sides 9 10, respectively, of said supporting-arm are screwed T-shaped bearing-,heads 16 17. The bearing-head 17 is provided on one side with a laterally-extending shoulder or oset 18, and said bearing-heads 16 17 are respectively provided with detachable members 19 20, which are bolted thereto, as shown, said heads and their respective detachable members being adapted for the reception of the shaft G, whereby the latter may rotate therein, and said bearing-heads and their respective detachable members are adapted to be babbitted in the usual manner.'

A sprocket-pulley 21,which is loose on the shaft G, the latter being adapted to rotate therein, is bolted to the offset or shoulder 18 of the' bearing-head 17, whereby the rosser-supporting arm is firmlysecured to said sprocketp'ulle-y, and said rosser-supporting arm, as will be understood from the foregoing descri ption, is pivoted on the counter-shaft Gand is adapted to be swung or raised or lowered at its free end in a vertical plane, so as to raise andlower the rosser.

A sprocket-chain 22 has one end attached to a tension-spring 23, which tension-spring is connected to the standard or stand E by a suitable tension-regulating device, as at 24. Said sprocket-chain passes around the members of the double sprocket-wheel 3 and connects the latter with the sprocket-wheel 2l,

` as shown, and in the said sprocket-chain is included a coiled retractile or other suitable form of spring 25 to take up slack therein and keepthe same taut. The double pulley 3 being thus connected to the pulley 2l, attached to the rosser-supporting arm, the latter when the hand-lever 5 is opera-ted by the sawyer may be swung in a vertical direction `ou the counter-shaft G, so as to vraise the rosser when the latter is not in operation to a height where it will `be out of the way of the sawyer and to lower the ,said rosser to a position where it will be adaptedto operate on the saw-log. The spring 23 tends to raise the rosser and is employed to counterbalance it. The spring 25 by keeping the chain 22 taut keeps the same at all times in operative engagement with the teeth of sprocket-wheels 3 and 21.

Bearings 26 are bolted or otherwise suitably secured under the side tubes ofl the rosser-supporting arm 7, near the outer end of the latter, in which bearings is journaled the mandrel 27 of the rosser. provided with a pulley 28, whereby rotary motion may be communicated thereto. A pulley 29, keyed on the counter-shaft G, is cnnected to the rosser-mandrel pulley 28 by an endless 'belt 30. The drum or casing 31 of a rotary blower-fan 32 for creating a blast of air is suitably mounted and secured on the side 9 of the rosser-supporting arm 7, near the inner end thereof, and on the shaft 33 of said blast-fan is keyed a pulley 34,V which is connected to a pulley 35 on the counter-shaft G by an endless belt 36.

It will be understood from the foregoing description that when the counter-shaft G is thrown into operation and rotated simultaneously with the saw-mandrel the blast-'fan and the rosser-mandrel are also putin operation. A flexible or other suitable tube or conveyer 37 leads from the discharge-port of the casing or drum of the blast-fan and discharges under the outer end of the mandrel-supporting arm in a position appropriate to the cut or kerf made by the rosser in the surface of the saw-log, the function of the blast-fan, as will be read-ily understood, being to blow away the particles of bark, sand, ice, grit, and other foreign substances out by the rosser and cleared from the path of the saw, so -that the teeth of the saw will not be dulled .or broken thereby. n

The improved rosser of my invention comprises, essentially, a circular head or stock 38, provided with peripheral seats. 39, adapted for the insertion and operative retention of insertible teeth 40 from the saw of the sawmill. The Vsaid peripheral seats 39 `correspond with those of the saw. A prime object of my invention is to provide a rosser which is adapted to utilize the insertible teeth of lthe sawmill-saw for rossing purposes after the said insertible teeth have become -dulled and worn by use in the saw rto such an .extent as to be worthless for sawing purposes, and this I accomplish, as hereinbefore stated, by providing a Vcircular rosser head or `stock with peripheral seats identical with those in the periphery of the saw for the reception of the insertib'le Asaw-teeth, and hence when the sawteeth become dulled and otherwise lrendered luseless for sawing purposes I remove such teeth from the saw and employ them in the rosser, where they are perfectly adapted for rossing purposes and working in the bark, sand, grit, ice, and other foreign substances usually in the crevices of the bark and surfaces .of saw-logs. The circular rosser-head is `adapted to be secured on the mandrel 27 in the same Amanner 4that the circular saw is secured on the saw-mandrel bythe usual head 41, having dowel-pins 42, circular collar 43, and tap 44. The rosser is yarranged in line with the saw and removes the bar-k, sand, grit, ice, and other foreign substancesfrom Said mandrel is IOO IIO

the log by cuttinga kerf orgroo've in the surface of the log in advance of thesaw, and thereby protects the saw-teeth from being dulled, broken, or otherwise injured by such foreign substances. t

In some instances it may be found desirable to substitute for the rosser (hereinbefore described) a rectangular revoluble head, as at 45, the sides of which are adapted for the attachment of chisel-like cutting-plates 46 by means of bolts 47, said bolts and said cuttingplates being adapted for the proper adjustment of the latter.

The kerf orgroove cut by the rosser should exceed in width the kei-f made by the saw which follows the rosser, and I adapt my improved rosser to make such a cut or kerf by employing two of my rosse'rs to operate simultaneously, the same being placed side by side, contacting with each other, on the mandrel 27, and thereby adapted to cut a kerf or groove which is double that of the width of the kerf made by the saw. My rosser-heads when thus employed are so arranged that the teeth of one of said rosser-heads operate and are located in advance of those of the other rosser-head, this relation of the rossers being illustrated in detail in Fig. 8 of the drawings.

It is desirable when cutting off a slab and making the iirst cuts of lumberfrom the sawlog to ross the groove or kerf on the log more deeply on the outer side'thereof than toward the center of the log, because of the rotundity of the saw-log, and to adapt my improved rosser for thus making a cut, groove, or kerf which is deeper on one side than on the other I combine two rossers, one of which is of greater diameter than the other, as shown in detail at Fig. l0 of the drawings, the rosser which is of greater diameter operating on the outer side of the log.

It is important to protect the sawyerI from the flying particles of bark and foreign substances cut and thrown by the rosser, and to this end I provide a guard or casing 48, which has the closed side 49, proximate to the sawyer,and the opposite open side 50. This shield or casing is substantially semicylindrical in v form and is attached to the rosser-supporting arm,as shown at 51, and detachable therefrom, and the said shield or casing is eccentrically disposed with relation to the rosser, the latter being nearer the front or outer end of said shield or casing than the rear or inner end thereof. A discharge-opening 52 is made in the rear side of said shield or casing 48, above the arm 7, and at one side of said dischargeopening is an obliqnely-disposed delectingwing 53, which serves to direct the particles thrown against it by the rosser through the opening 52 outward beyond the side of the saw-log opposite the sawyer. Below the rear side of the shield or casing 48 is a pivoted adjustable `deflecting-wing 54, which catches the foreign substances and particles of bark discharged downwardly from the rear side of the rosser and directs the same outward in the direction opposite the Sawyer, aswill be unries in saw-logs of different sizes and different kinds, it is desirable to provide the rosser j with means for controlling, regulating, and predeterminingthe depth of the kerforgroove made thereby, as the same should not enter the wood within the bark to any considerable extent, as otherwise it would injure the lumber cnt from the log, and to eifect this object I combine withthe supporting-arm which carries the rosser an adjustable ru nner, which is adapted to bear upon the saw-log while'the rosser is at work and restrain any tendency of the outer end of said su pporting-arm to lower the rosser in the log; In the accompanying drawings I have shown one embodiment of this feature of my invention, more particularly with reference to Figs. 3, l1, and 12, which embodiment of this feature ot' my invention I will now describe.

The front or outer end of the shield or casi ing 48 is provided with a projecting arm 55, i which vforms an extension of the outer end of the arm 7, and to this extended arm 55 is hinged or pivoted the outer end of an adjusting-runner 56. The latter may be either of the form herein shown or of any other suitable form and is provided with anopening 57 to clear the lower side of the rosser and through which the latter operates, the side portions 58 of the runner bearing on the surface of the log on opposite sides of the rosser, and hence determining, controlling, and regulating the depth of the cut or kerf thereof. In the form of the runner herein shown the runner is provided at its rear end with an upturned-arm 59, provided with an adjustingslot 60. The set-screw 6l, which secures the adjusting-wing 54 to the closed side of the shield or casing over the rosser, operates in said adjusting-slot and serves to clamp the said arm and bind the same against the proximate side of the shield or casing, so as to secure the runner at any desired adjustment with relation to the lower cutting side of the rosser, and thereby predetermine, regulate, and control the depth of the cut, groove, or kerf made by the rosser. I do not desire, however, to be understood as limiting myself to the particular form of the means for adjusting the rosser hereinbefore described, as modifications may be made therein without departing from the spirit of my invention. Neither do I desire to limit myself to the precise form of the rosser, the shield, or casing therefor, the supporting-arm, the blast-fan, or the means hereinbefore described for raising and lowering the supporting-arm, as the details thereof may be modified in many ways Without departing from the spirit of my invention.

IOO

IIO

,Having thus described my invention, I@

claim;-

l. The combination with the supporting member, of the rosser carried thereby, the rulnner pivoted atI one end tothe supporting. member, disposedparallel with the rosser andy havingitsfree end adj ustably secured to the* supporting. member', substantially' as described.

2.- In a rosser for sawmills, a shield or casingdisposed over the rosser, open on its outer side, and having an opening in its upper side in rear ofthe rosser, and deflecting-w'i'ngs dis# posed obliqu'el-y to said opening, substantially as described.

3. In a rosser for sawmills, a shield or cas; ing, disposed over the rosser, a runner disposed parallel with. the rosser and pivotally connected atl its front end to the shieldor cas-l ing andmeians to adjust said pivoted run ner,l substantially as described.

4. In a rosser'for sawmills, a shield or casing disposed over the rosser, a runner disposed parallel withl the rosser', pivotally con-Y nected atits front end to the shield or casing, and having an upturned arm at its rear end adj ustably secured tothe shield or casing, substantially as described. A

5.A In a rosser for sawmil-ls, a shield disposed over the rosser open.` onV its outer'si'de` andi having obliquely disposed deflecting.-v wings (one ormore), substantially' as described.

6. In arosse'r for sawmills, ashield or casing disposed overtherosser, open onhits outer side and having an opening` in itsupper` side in' rear of the rosser and a deiiector disposed obliqliely over said opening, said shield or casing beingfnrther provided at its rear por-` tion with an adjustable, obliquely-disposed deflecting-wing, substantially as described.l

7. In a-sawmill, the combination of a counter-shaft and aI rosser-supporting member thereonf, a lever, connections between said 1 lever and said supporting member to turn the latter on said lcounter-shaft and thereby raise land lower the rosser, and aA tension device `connected to said leverv and counterbalancin g said supporting member, substantially as described.

8. In a rosser attachmentfor sawmills, a

. supporting-'arm 'having ashicld comprising a bottom plate secured on the supporting-arm, andA having an extension at its front end, a runner pivotally connected at its-r front end to' said extension andk adjustabl-y secured at its rear" end tosaid bottom plate, and a cover detachably secured to said bottom plate, substantially asl described.

9. In a sawmill, the combination with-a counter shaft, a supporting arm pivoted thereon, said arm carrying a rosser, a pulley attached tothe `pivotal end of said arm, a handlever having a s'heave or pulley at its pivotal end, and connections, substantially as setfforth between said sheaves and pulleys, substantially as described.v

10. A supporting-arm for arosser, having bearingfheads at its inner side, in combinationwitha counter-shaft on which said bearying-'heads are adapted to turn, one of said bearing-'heads having a shoulder or offset 18,

' a sheave or wheel on said counter-shaft and secured to said shoulder or oseaa lever and connections between the latter and said sheave or wheel, substantially asdescribed. In testimony that I claimA the foregoing as my ownvI have hereto'aiixed my signature in the presence of two witnesses.

ROBERT H. DICKINSON.

Witnesses:

M. C. GLADMOND, J. W. GARNER. 

